import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '.././components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'

Vue.use(VueRouter)

const routes = [
  {
    path:'/',
    redirect:'/login'
  },
  {
    path:'/login',
    component:Login
  },
  {
    path:'/home',
    component:Home,
    redirect:'/Welcome',
    children:[
      {
      path:'/Welcome',
      component:Welcome
    },
    {
      path:'/users',
      component:Users
    },
    {
      path:'/rights',
      component:Rights
    },
    {
      path:'/roles',
      component:Roles
    },
    {
      path:'/categories',
      component:Cate
    }
    ]
  },
]

const router = new VueRouter({
  routes
})

//挂载路由导航守卫
router.beforeEach((to,from,next) => {
  //to将要访问的路径
  //from代表从哪个路径跳转而来
  //next 是一个函数 表示放行
  //     next() 放行  next('/login)强行跳转
  if(to.path === '/login') return next();
  //获取token
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next()
})

export default router
